Treats are one of the most enjoyable parts of keeping chickens. The way a flock comes running at the sight of a kitchen bowl, the way individual birds develop favorites, the way even shy hens become bold for the right snack — feeding treats turns the daily routine from chore into something more like spending time with pets.
But treats are also where chicken keepers cause more harm than they realize. The “chickens will eat anything” mentality leads to feeding leftovers that include things chickens shouldn’t have. Well-meaning attempts to share food create slow-developing health problems. And every year, keepers lose birds to specific foods that nobody warned them about because the information isn’t always obvious.
The good news is that most foods are fine for chickens in moderation. The bad news is that the dangerous foods are sometimes common ones — things people throw to chickens without thinking — and the consequences range from mild illness to sudden death depending on the food and the amount.
This guide goes through fifteen treats that chickens genuinely love and benefit from, ten foods that should never go in the run, and the principles behind why each item makes either list.
The 10% Rule
Before getting to specific foods, the underlying principle that shapes good treat-feeding is simple: treats should make up no more than 10% of a chicken’s daily diet. The remaining 90% should come from balanced commercial feed.
The reason isn’t about safety — most safe treats are perfectly fine in any reasonable amount. The reason is nutrition. Commercial layer feed is formulated to provide complete balanced nutrition for laying hens. Treats, even healthy ones, dilute that balance. A flock eating 30% treats is eating 30% less of the food specifically designed for their needs, and over time this shows up as thinner shells, reduced laying, dull feathers, and slower recovery from molt or illness.
For a flock of four hens eating about a pound of feed total per day, the treat allowance works out to roughly 1.5 ounces total — not much. A small handful of fresh greens, a few mealworms each, and a few cubes of cut watermelon hits that limit pretty quickly.
Many keepers exceed this regularly without obvious problems. Birds still lay, still seem healthy, still behave normally. The harm is gradual rather than dramatic, and it shows up as subtly reduced performance rather than acute illness. Worth keeping in mind even if exact measurement isn’t practical.
With that framing established, here are the treats worth offering and the foods to keep away.
15 Treats Chickens Love and Benefit From
1. Mealworms (live or dried). The universal chicken favorite. High in protein, irresistible to almost every breed, useful for training and bonding. Live mealworms provide extra hydration and stimulation as the birds chase them. Dried mealworms are easier to store and use. Both work well, with dried being significantly cheaper per ounce. Particularly valuable during fall molt when birds need extra protein for feather replacement.
2. Fresh leafy greens. Lettuce, kale, chard, spinach, collards, mustard greens — any leafy green from the garden or kitchen disappears fast. Birds enjoy the texture and the act of tearing leaves apart. Greens provide vitamins and small amounts of calcium. Hanging a head of lettuce or kale from a string in the run keeps birds occupied for an hour.
3. Watermelon. A summer staple in many chicken-keeping households. Birds eat the flesh enthusiastically and even peck at the rind. The high water content provides hydration during hot weather, and the natural sugars give a quick energy boost. Frozen watermelon chunks work especially well as heat-wave treats.
4. Berries. Strawberries, blueberries, blackberries, raspberries — chickens love all of them. The colorful fruits provide antioxidants and small amounts of vitamins. Frozen berries from the bag work fine too, and the cold helps in summer. Tomatoes count here too despite technically being fruits.
5. Sunflower seeds. Black oil sunflower seeds in particular are excellent treats. High in fat and protein, useful for feather growth during molt, and birds enjoy cracking the shells. Best fed in small quantities because of the calorie density. Sunflower hearts (the shelled version) work too but cost more.
6. Cracked corn or whole corn. Corn in any form is a favorite, but it should be limited because it’s mostly carbohydrate with little protein or vitamins. Scratch grain mixes containing corn make excellent winter treats — the carbs help birds generate body heat overnight. In summer, corn should be limited because it actually generates internal heat during digestion.
7. Pumpkin and squash. Both the flesh and seeds are good for chickens. Pumpkin seeds in particular contain compounds that act as mild natural dewormers, though they don’t replace actual veterinary treatment for serious worm problems. Cooked or raw pumpkin works equally well. Fall and winter pumpkin treats use up Halloween leftovers nicely.
8. Cooked eggs (scrambled or hard-boiled). Counterintuitive but excellent — chickens enjoy cooked eggs and gain protein from them. Particularly useful during molt when feather regrowth requires extra protein. The concern that this leads to egg-eating in the nest box isn’t supported by evidence; cooked eggs look and smell nothing like fresh eggs to a chicken.
9. Yogurt (plain, unsweetened). Provides probiotics and protein. Chickens enjoy the texture but are somewhat lactose intolerant, so amounts should stay small to avoid loose droppings. Plain Greek yogurt works particularly well because it has lower lactose than regular yogurt. Useful occasionally rather than daily.
10. Cooked rice or pasta. Plain, unseasoned, in small amounts. Not particularly nutritious but useful for using up leftovers. Birds enjoy the texture, and it adds variety. Should be fully cooled before serving.
11. Cucumbers. High water content makes them excellent summer treats. Birds peck at the flesh and seeds while ignoring the tougher skin. Whole cucumbers split lengthwise provide both food and entertainment as birds work through them.
12. Cooked oatmeal. Warm oatmeal on cold mornings is a winter favorite in many flocks. Plain oats cooked with water (no milk, no sugar, no flavorings) provide carbohydrates and warmth. Some keepers mix in mealworms or seeds for extra protein. A great cold-weather morale boost.
13. Apples (without seeds). Birds love apple flesh. The seeds contain trace amounts of cyanide compounds and should be removed, though a few accidentally consumed seeds aren’t dangerous. Whole apples with the core removed make good run treats. Avoid the practice of throwing whole apples in for birds to peck at; the core seeds are best discarded.
14. Sprouted grains. Soaking wheat, oats, barley, or other grains for 12-24 hours and letting them sprout for another day or two produces highly nutritious treats. Sprouting increases vitamin content and makes the grains more digestible. A small batch each week provides variety throughout the year, particularly valuable in winter when fresh greens are unavailable.
15. Insects from the garden. Beetles, grasshoppers, worms, grubs, slugs, and similar creatures collected from the garden are treats chickens genuinely treasure. Many keepers turn pest removal into chicken-feeding time. Japanese beetles in particular are loved by chickens and hated by gardeners — collecting them into a container and dumping them in the run is a satisfying solution to two problems.
10 Foods That Can Kill or Seriously Harm Chickens
1. Avocado. The most dangerous common food. All parts of the avocado plant contain persin, a fungicidal toxin that’s particularly harmful to birds. The flesh, pit, skin, and leaves all contain it, with concentrations highest in the pit and skin. Symptoms develop within 24-48 hours of ingestion and include difficulty breathing, weakness, and cardiac issues. Even small amounts can be fatal. The lesson is universal: keep avocado away from chickens completely. This includes guacamole, sushi rolls containing avocado, and any other prepared food with avocado as an ingredient.
2. Raw or dried beans (uncooked). Raw beans of most varieties — kidney beans especially — contain lectins called phytohaemagglutinins that disrupt protein digestion and damage the intestinal lining. Even a small number of raw kidney beans can cause severe illness or death. Cooking destroys these compounds, so cooked beans are safe in moderation. The problem with raw beans is they’re often included in dry mix products marketed for various uses, and they can end up in chicken treats by accident if keepers aren’t reading ingredient lists.
3. Chocolate. Theobromine and caffeine in chocolate are toxic to chickens just as they are to dogs. Dark chocolate is most dangerous because of higher theobromine content. Symptoms include vomiting (rare in chickens), heart issues, and central nervous system problems. Even small amounts cause harm to birds because of their size. This includes baked goods containing chocolate and most cocoa-based products.
4. Moldy food. Mycotoxins from molds on bread, grain, fruit, and other foods cause serious liver damage and can be fatal in significant amounts. The dangerous molds are often invisible — by the time mold is visible, the food has been contaminated for some time. Damp grain stored in poor conditions develops these toxins. The general rule: if you wouldn’t eat it because of mold, don’t feed it to the chickens either. The “chickens will eat anything” mentality leads to mycotoxin exposure that quietly damages birds over time.
5. Green potato parts and sprouts. Green portions of potatoes, sprouted potatoes, and potato leaves contain solanine, a toxic alkaloid. Normal cooked potato flesh (without green coloring) is safe in moderation. The problem is that green-tinged potatoes from the bottom of the bag often get thrown to chickens as scraps. Solanine causes digestive issues, weakness, and potentially fatal poisoning in significant amounts. Same applies to green tomatoes (less concentrated but still problematic in quantity), eggplant leaves, and other green parts of nightshade family plants.
6. Onions in large quantities. Onions contain thiosulfates, which damage red blood cells in birds. Small amounts cooked into other foods aren’t problematic, but concentrated onion exposure — like a whole onion thrown to the flock — causes anemia and weakness. Garlic shares some of the same compounds but in much lower concentrations, and is generally fine in small amounts. The practical rule: avoid feeding leftovers containing significant onion content and never throw whole onions into the run.
7. Salty foods. Chickens have limited ability to process sodium. Heavily salted foods cause salt toxicity, which manifests as excessive thirst, weakness, and in severe cases, neurological problems. Chips, salted crackers, cured meats, and heavily seasoned leftovers should be kept away. Small amounts of mildly salted food aren’t dangerous, but birds shouldn’t have regular access to salty snacks.
8. Caffeine. Coffee grounds, tea bags, energy drinks, and other caffeinated products are toxic to chickens. Caffeine causes heart problems, restlessness, and potentially death in significant amounts. Used coffee grounds from compost bins should be kept away from chicken access. The same applies to chocolate covered coffee beans and similar products.
9. Apple seeds, cherry pits, peach pits, and other stone fruit pits. These contain amygdalin, which converts to cyanide during digestion. A few accidentally swallowed apple seeds aren’t dangerous because the seeds usually pass through intact. The problem is when seeds are crushed or chewed thoroughly, releasing the cyanide compounds. Stone fruit pits (cherry, peach, plum, apricot) contain much higher amounts than apple seeds and should be removed before fruit is given to chickens. The fruit flesh itself is fine.
10. Raw or undercooked meat scraps, especially poultry. Most cooked meat is safe in moderation, but raw meat carries bacterial risks (salmonella, campylobacter) that can harm chickens and create food safety issues for the household. Raw poultry specifically is concerning because of disease transmission risk. Spoiled meat of any kind should never be fed. The general rule: cooked, fresh meat in small amounts is fine; raw, old, or questionable meat isn’t worth the risk.
Foods That Cause Confusion
Several foods get debated in chicken-keeping discussions because the information about them isn’t always consistent.
Bread. Mostly fine in small amounts, but provides minimal nutrition. The concern with bread is that birds love it and will fill up on it instead of nutritionally complete feed. Moldy bread is genuinely dangerous. Fresh bread in moderation is harmless but not particularly beneficial.
Citrus fruits. Most chickens won’t eat citrus voluntarily, so the question is somewhat academic. There’s no strong evidence that small amounts of citrus harm chickens, but the conventional wisdom against feeding it persists. The flock will likely sort this out by ignoring oranges and lemons if offered.
Dairy products. Chickens are mildly lactose intolerant. Small amounts of cheese, yogurt, or milk cause no harm, but large amounts cause digestive upset. Aged cheeses with lower lactose are fine in moderation.
Spinach. Contains oxalic acid that binds calcium. In normal small amounts as a treat, this doesn’t matter. Daily large amounts could interfere with calcium absorption over time. Variety in greens prevents this from being an issue.
Rhubarb leaves. Definitely toxic — contain high levels of oxalic acid. The stalks (which humans eat) are also too acidic for chickens. Best to keep rhubarb out of the chicken diet entirely.
Raw rice or pasta. Despite a persistent myth that these expand in the stomach and harm birds, modern evidence suggests this isn’t a real problem. However, cooked versions are easier to digest and more appealing. The myth is wrong but the practical recommendation (cook before feeding) is still good.
Treats That Work Best for Specific Situations
For molting birds: Higher-protein treats accelerate feather regrowth. Mealworms, sunflower seeds, cooked eggs, and sprouted grains are all excellent during fall molt. Some keepers temporarily increase the protein percentage of their feed during molt.
For hot weather: Hydrating treats help with heat stress. Frozen watermelon, cucumbers, leafy greens, and ice-cube blocks containing fruit are summer staples. Avoid corn during heat waves because it generates body heat during digestion.
For cold weather: Energy-dense treats provide calories for body heat. Warm oatmeal, cracked corn, scratch grain, and sunflower seeds all work well in winter. Many keepers give scratch grain in the late afternoon so birds digest it overnight when temperatures drop.
For new birds adjusting to a flock: Treats can ease introductions and bonding. Scattering treats during integration sessions helps both new and existing birds focus on food rather than aggression. Mealworms are particularly effective for this purpose.
For training and handling: Birds learn quickly that you mean treats. Carrying a small container of mealworms for a few weeks teaches even skittish birds to come when called. This makes everything from health checks to coop closure dramatically easier.
Common Treat-Feeding Mistakes
Several patterns repeat with treat feeding:
Feeding too much. The most common mistake. Treats become a major portion of the diet instead of supplements, leading to nutritional imbalance over time.
Feeding obvious favorites at the expense of variety. Mealworms are loved but not nutritionally complete. Variety provides better overall nutrition than constant feeding of one favored item.
Not removing uneaten treats. Wet vegetables and fruit left in the run rot quickly. Removing uneaten portions before they spoil prevents both mold issues and rodent attraction.
Feeding treats from the hand to all birds at once. Aggressive birds get most of the treats; submissive birds get pushed away. Scattering treats over a wider area lets everyone get some.
Assuming “all chickens will eat anything” is true. This causes the most serious mistakes. Chickens will try to eat almost anything, but eating it and tolerating it are different things. Birds don’t have internal warning systems for many toxic foods.
Throwing food scraps without examination. A bowl of leftovers that includes avocado, onion, or moldy bits causes harm even though most of the contents would be fine. Sorting before serving prevents accidental poisoning.
Frequently Asked Questions
Can chickens eat eggshells? Yes, crushed eggshells provide calcium. Drying them in the oven briefly before crushing makes them less recognizable as eggs and prevents egg-eating habits.
What about live insects from outside? Almost all common garden insects are safe and beneficial. Lightning bugs (fireflies) are an exception — they contain toxins and shouldn’t be eaten. Most other beetles, grasshoppers, worms, and grubs are safe.
Are mushrooms safe? Cultivated mushrooms (button, portobello, shiitake) are safe in moderation. Wild mushrooms are too risky to feed because of identification difficulties.
What if my chickens ate something they shouldn’t have? Small amounts of most problematic foods cause limited harm. Watch for symptoms over the next 24-48 hours — lethargy, refusing to eat, abnormal droppings, breathing issues. Serious symptoms warrant veterinary consultation. Avocado ingestion is more concerning than most because of how rapidly it can cause cardiac issues.
Can I feed chicken bones to chickens? Cooked bones can splinter and cause injury. The cannibalism question (chickens eating chicken) is more of an emotional concern than a practical one — they’d eat it without hesitation — but there’s also disease risk from bone fragments and bacteria. Not recommended.
Are there any commercial chicken treats worth buying? Many work fine. Mealworm packages, sunflower seeds, and various commercial “chicken treats” usually contain safe ingredients. Reading labels matters — some commercial treats contain too much salt or other questionable additives.
How often should I give treats? Daily is fine if the total stays within the 10% guideline. Some keepers do treat-free days a few times a week to ensure birds eat plenty of regular feed. Either approach works.
The Practical Approach
Treat-feeding works best when it’s enjoyable for both the keeper and the birds, kept in proportion to the overall diet, and built around variety rather than one favored food. Most kitchen scraps, garden surplus, and intentional treat purchases fall into the safe category, with the dangerous foods being a relatively small list of specific items to remember and avoid.
The real takeaway is that the dangerous foods are dangerous in ways that often aren’t obvious. Avocado looks healthy. Onions are everywhere in cooking. Moldy bread looks “still mostly fine.” The keepers who lose birds to food-related problems usually didn’t know the food in question was an issue. Once the list of problem foods is internalized, the daily practice of sharing food with chickens becomes straightforward.
A flock that gets sensible variety in safe treats, alongside a solid foundation of balanced commercial feed, thrives in ways that show up as healthier feathers, consistent laying, longer lives, and birds that look forward to your arrival in the run every day. The treats become part of the bond between keeper and flock, and that bond is one of the genuinely rewarding parts of keeping chickens long-term.